TW201014433A - Method used in evolved mobile telecommunications system, method used in user equipment, evolved mobile telecommunications system, and user equipment - Google Patents

Method used in evolved mobile telecommunications system, method used in user equipment, evolved mobile telecommunications system, and user equipment Download PDF

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TW201014433A
TW201014433A TW098120931A TW98120931A TW201014433A TW 201014433 A TW201014433 A TW 201014433A TW 098120931 A TW098120931 A TW 098120931A TW 98120931 A TW98120931 A TW 98120931A TW 201014433 A TW201014433 A TW 201014433A
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Taiwan
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data
radio
pdcp
radio bearer
packet data
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TW098120931A
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Chinese (zh)
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TWI408984B (en
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Chih-Hsiang Wu
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Htc Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Abstract

A method used in an E-UTRAN for synchronizing PDCP operations after a RRC connection re-establishment procedure with a user equipment (UE) is provided. The method includes: initiating an RRC reconfiguration procedure to resume all radio bearers other than a signaling radio bearer 1 (SRB1) when an RRC connection is re-established; re-transmitting a designated group of PDCP Service Data Units (SDUs) to the UE when a data radio bearer (DRB) mapped on Radio Link Control (RLC) Acknowledged Mode (AM) is resumed.

Description

201014433 六、發明說明： 【發明所屬之技術領域】 本發明係相關於-種無線通訊方法與其相關裝置，尤指一種在無 ，通訊祕中重難立無㈣雜制連線轉後將封^料聚合協 •定之運作同步化的無線通訊方法與其相關裝置。 【先前技術】 長期演進(Long-term ΕνοΜοη，LTE)技術係起始於第三代合作夥 ❹伴計劃(Third Generation Partnership Project，3GPP)，現今已是公認可 提供高資料速率、低延遲、封包最佳化以及增進系統容量與涵蓋範 圍的一種新的無線介面及無線網路架構。在長期演進系統中，一演 進通用陸地無線接取網路(Ev〇ived Universal Terrestrid Hadio Aeeess Network，E-UTRAN)包含有複數個進化節點基地台（Ev〇lyed201014433 VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a wireless communication method and related devices, and more particularly to a type in which there is no communication secret. (4) After the miscellaneous connection is turned, the invention will be sealed. The material aggregation protocol determines the wireless communication method and its related devices. [Prior Art] The Long-term Evolution (Long-term ΕνοΜοη, LTE) technology started with the Third Generation Partnership Project (3GPP), which is now recognized to provide high data rates, low latency, and packetization. A new wireless interface and wireless network architecture that optimizes and enhances system capacity and coverage. In the Long Term Evolution (LTE) system, the Ev〇ived Universal Terrestrid Hadio Aeeess Network (E-UTRAN) contains a number of evolved node base stations (Ev〇lyed).

Node-B，eNB)並與複數個行動台溝通，而該些行動台又可稱之為用 戶設備(User Equipment, UE)。 0 請參照第1圖，其為先前技術之長期演進系統中無線介面協定的 示意圖。如第1圖所茱’ 1¾長期演進系統之無線介面協定包含有三 個通訊層：實體層L1、資料鏈結層L2以及網路層L3 ,其中網路層 L3的控制層面(Control Plane)為一無線資源控制(Radi〇 Re sourceNode-B, eNB) communicates with a plurality of mobile stations, which may be referred to as User Equipment (UE). 0 Refer to Figure 1 for a schematic diagram of a wireless interface protocol in a prior art Long Term Evolution system. As shown in Figure 1, the wireless interface protocol of the Long-Term Evolution System includes three communication layers: the physical layer L1, the data link layer L2, and the network layer L3. The control plane of the network layer L3 is one. Radio resource control (Radi〇Re source

Control)層，而資料鏈結層L2可進一步分成一封包資料聚合協定 (Packet Data Convergence Protocol, PDCP)層、一無線鏈路控制(RadioControl layer, and the data link layer L2 can be further divided into a Packet Data Convergence Protocol (PDCP) layer and a radio link control (Radio).

Link Control，RLC)層以及一媒體存取控制(MediumAccess c〇ntr〇1， MAC)層0 201014433 第2圖為総技術之長期演進系統的無線資源控制連線重建程 序之示意圖。如第2圖所示，若一無線資源控制連線因無線鍵結失 敗而中斷，則需要重新起始-無線資源控制連線重建程序以便重建 該無線資源控制連線。首先’―用戶設備(UE⑽發送—要求益線 資源控制連線重建訊息給演進通用陸地無線接取網路(£棚碼） Π0。在接收到該要求無線資源控制連線重建訊息之時，演進通用陸 地無線接取網路12G則回應—無線#源控制連線重建訊息給用戶設 ❹備110。當接收到該無線資源控制連線重建訊息時，用戶設備11〇 立即回復(rc_e)-第-發信無線承載(Signaling Radi。Be· D SRm，並對-下層通訊雜weHaye⑽行_以立即應用先前已 組態完成之演算法來重新啟動安全機制(包含有完整性保護恤挪 protection)與加密(ciphering))，換言之，用戶設備11〇接下來接收與 發送的訊息都將經過完整性保護與加密的處理。之後，用戶設備ιι〇 發送-無線資雜制連線重建完成訊息來通知演進通驗地無線接 ❹取網路120無線資源控制連線已再次建立完成。為了要回復除了第 -發信無線職SRB1 &卜的所有無線承載(RadiQbe贿），演進通 用陸地無線接取網路120讀在該^篆資源控制連線重建完成後起 始一無線資源控制連線重新組雜居，其中該無線資源控制連線重 新組態程序係用來修改該無線資源控制連線。 然而，在某些情況之下，並沒有清楚的定義如何在該無線資源控 制連線重建完成後回復發信無線承载與資料無線承載(DataRadi〇 Bearer，DRB)以及後續的無線資源控制連線重新組態程序。舉例來 說’若用戶設備no係由-第-進化節點基地台交遞(hand〇ver)給 201014433 一第二進化節點基地台’一封包資料聚合協定傳送實體(transmitting PDCPentity)中壓縮器(compressor)的内文(context)已被更新，而一封 包資料聚合協定接收實體(receiving PDCP entity)中解壓縮器 (decompressor)的内文則未更新，於是，該封包資料聚合協定接收實 體之標頭解壓縮程序(header decompressions)在回復無線承載之後無 法對該些封包資料聚合協定服務資料單元(PDCP SDU)正確地解壓 縮。因此’ 一種能在無線資源控制連線重建後將封包資料聚合協定 0 之運作同步化的機制係為必要的。 【發明内容】 因此’本發明的目的之一在於，$無線通訊系統中，於無線資源 控制連線重建程序後提換蔣封包資“聚合協定之運作同步化的方法 與其相關裝置，以解決前述之問題。 依據本發明之一具體實施例，其揭露了一種應用於一演進通用陸 地無線接取網路的通訊方法，用以在與一用戶設備重新建立一無線 ❹資源控制連線程序後將封包資料聚合協定之運作同步化。該通訊方 法包含有：當一無線資源控制連線重新建立時，起始一無線資源控 制重新組態程序來回復除了一第一發信無線承載以外的所有無線承 載；以及當回復於無線鏈路控制認可模式下所映射之一資料無線承 載時，重新傳送一組指走之封包資_聚合協定服務資料單元給該用 戶設備。 依據本發明之另一具體實施例，其揭露了一種應用於一用戶設備 的通訊方法，用以在與一演進通用陸地無線接取網路重新建立一無 線資源控制連線程序後將封包資料聚合協定之運作同步化。該通訊 201014433 方法包含有·當一無線負源控制連線重新建立時，起始一無線資源 控制重新組態程序來回缓除了一秦發信無線承載以外的所有無線 承載；當回復於無線鏈路控制認可模式下所映射之一資料無線承載 時，接收發自該演進通用陸地無線接取網路之一組指定之封包資料 聚合協定服務資料單元。 依據本發明之另-具體實施例’其揭露了 —種演進咖陸地無線 ο 接取網路’用以在與-好設備重新建立—無線魏控制連線程序 後將封包資料聚合協定之運作同步化。該演進通用陸地無線接取網 路包含有：用以當-無線資源控制連線重新建立時，起始一無線資 源控制重新組態程序来_除了一筹一發信無線承載以外崎有二 線承載的手段；以及贱鏈路控制認可模式下所映二 之一資料無線承载時’重新傳送一組指定之封包資料聚合協定服 資料單元給該用戶設備的手段。 ❹ 一依據本發明之另—具體實施例，其揭露了—種用戶設備，用以在 =一演進_陸地絲接取娜重新建立—無線資源控制連線 ^將封包資料聚合協定之運作同步化。該用戶設備包含有：用以告 控觀職新紅時，喊除了—第—發信無線承^ 下絲承_手段|以及用以在回復於無線鏈路控制認可模 :網路載時:,收發自該演進通用陸地無線接 k 之封包資概合财服務資料單元的手段。 扭7所述，本發明提供了一種在無線通訊系統中重新建立益線資 、丄本發騎提供的鋪，演進朝麟無線接取網 7 201014433 路與用戶設備在無線f源控継線重建程序後可同步化封包資料聚 合協定之運作’如此—來，便可避免許㈣題，例如：在無線鏈結 控制認可模式中遺失封年資料聚合駐服務資料單元的問題、標頭 解壓縮失敗的_、錢之細鱗低下關題以及加較鑰問題。 【實施方式】 °月參照第3圖’其為依據本發明之一實施例的無線通訊號系統 3〇〇的方塊圖。無線通訊系統可為一長期演進系統然而這並 ❿非用以限制本發明之範脅，無線通訊系統3〇〇亦可為其他型態的無 線通訊系統。無線通訊系統300包含有(但不限於)一用戶設備310 與一演進通用陸地無線接取網路35〇。演進通用陸地無線接取網路 350包含有一封包資料聚合協定傳送實體36〇，而用戶設備31〇則 匕3有封包資料聚谷谣定接成貪碰々Ο。封包資料聚合協定傳送 實體360與封包資料聚合協定接收_ 32〇的詳細運作將在以下的 各個實施例中加以說明。 藝 凊注意’在以下的實施例中，第4圖至第8圖為回復於無線鏈路 控制(Radio Link Control，RLC)認可模式(Acknowledge Mode，AM)下 所映射之資料無線承載(Data，RadioBearer，DRB)的範例示意圖，第 9圖至第1〇圖為回復於無線鏈路控制非認可模式(Unackn〇wledge Mode，UM)下所映射之資料無線承載的範例示意圖，而第丨丨圖為回 復一第一發信無線承載(Signaling r神0 Bearer i)srbi與一第二發 k無線承載(Signaling Radio Bearer 2) SRB2之一範例的示意圖。 請參照第4圖，其繪示了由第3圖甲的封包資料聚合協定接收實 體320所接收之封包資料聚合協定服務資料單元(PDCP SDU)。如第 201014433 4圖所示，五個封包資料聚合協定服務資料單元41〇〜45〇由封包資 料聚合協定傳送實體360以在序(in-sequence)的方式傳送出去。在此 實施例中’封包資料聚合協定服務資料單元41〇〜450係以無線鍵路 控制認可模式所傳送，於是封包，然琴合協定接收實體32〇須發送 一無線鏈路控制認可以^誨該些封4資料聚合協定服務資料單元的 接收情形。當回復於無線鏈路控制認可模式下所映射之一資料無線 承载之後，封包資料聚合協定服務資料單元42〇與45〇被成功接收， ©而封包資料聚合協定服務資料單元410、430與440則因為無線鏈結 失敗而未能被封包資料聚合協定接收實體32〇所成功接收。然而， 封包資料聚合協定贿雜單元實紅是有被成功接收，但尚 未經由封包資料聚合協定接收實體32〇中的一下層通訊層所確認。 為了解決該些封包資料聚合協定服務#料單元的遺失醜，下面提 出了三種解決方案。 / [解決方案1]:賴_無_路控繼可模式下所映射之資 ❹料無線承載之後，封包資料聚合協定傳送實體36〇從封包資料聚合 協定服務㈣單元·_始蝴⑽所有_包資料聚合協定服 務資料％’其中在補應之封包#料聚合協定資料單元 ㈣㈣咖仰議it，PDU财被—下層軌_錢成功傳 =封包_合龄歸_元巾，_料聚合龄服務資 ，早兀410的排序為第一位。這個解決方案 定服務資料單元的遺失問題，但會因為必項舌崖化資似口協 單元的動作而觀絲_齡=“射贿送財服務資料 [解決方案2] : #回復於無__繼可模式下所映射之資 9 201014433 料無線承載之後，封包資料聚合協定傳送實體36〇重新傳送封包資 料聚合協定服務資料單元410〜450中，尚未被下層通訊層確認為成 功傳送的封包資料聚合協定資料單元相對應的封包資料聚 務資料單元，也就是說，僅封包㈣聚合蚊服務㈣單:41〇、 430與440會被重新傳送。這個解啐方案能對第一個解決方案作出 改進，但仍會造成部份無碜資渾的浪費。 ❹ [解決方案3]:當_於絲鏈路㈣懷可模式下所映射之資 料無線承載之後，封包資料聚合協定接收實體32〇傳送由無線資源 控制所設定的-封包資合龄狀況報告給封包㈣聚合協定傳 送實體。之後，封包資料聚合協定傳送實體360會傳送該封包 資1聚t協定狀況報告中被指示為尚未收到的封包資料聚合協定服 務:貝料單it換5之，封包資料聚合協定服務資料單元伽與mo 會依據雜包資料聚合協定狀況報告峨重新舰。倘若在解決方 ^與解決方案3巾，上騎訊層的蚊:雜單元需要以在序的方 式傳送，則封包資料聚合财接;^體32()需要將已接收之脫序 (者sequence)的封包資料聚合^定服務資料單元解密並重新排 2田回復於無線鏈路控制認可模式下所映射之該資料無線承載 祖抑〇 /十時器以重新排列該些已接收封包資料聚合協定服務資 當該計時器計時完畢時，便會完成該些封包資料聚合協定 一 ^料單元的排序而該些已接收的封包資料聚合協定服務資料 早兀會被傳送至一上層通訊層。 第5圖扣了上述的解決方案丨〜解決方案3，❿第5圖為依據 X月之實知例在一無斧通訊系就中重新建立一無線資源控制連 * V. l· ” 彳公 201014433 線程序後將封包資料聚合協定之運作同步化的方法之流程圖。 法包含下列步驟： 步驟502 :回復於無線鏈路控制認可模式下所映射之一資料無線承 載。 步驟 組♦曰疋之封包資料聚合協定服務資料單元因無線鏈結 失敗而未被成功接收。 步驟训：從相對應的封包資料聚鱗定資料單元尚未被一下層通 © 訊層確縣成^傳送的封包練聚服務資料單元 開始重新傳送排序第—個的封包資料聚合協定服務 =貝料單元以及位於其後所有的封包資料聚合協定服務資 料單元。 步驟52G .重新傳送封包將聚合協定服務資料單元巾，相對應的 封包貝料聚合協定資料單元尚未被該下層通訊層破認為 成功傳送的封包資料聚合協定服務資料單元。 ⑩步驟別：傳送由無_雜辦設定的—封包資料聚合協定狀況 報告給封聚合協蹙#送實體。 步驟532 : 4新傳送表_包資合協定狀況報料被指示為尚 未收到的封包資料聚合協定服務資料單元。 對映射於無線鏈路控制認可模式之下的一資料無線承載而言，封 包資料聚合協定接收實體32〇中的標頭解壓縮程序可能無法在回復 該資料無線承载之後正常運作。舉例來說，封包資料聚合協定傳送 實體360因為無線鏈結失敗而無法成功傳送五個已壓縮封包資料聚 合協定服務資料單元’而封包資料聚合協定傳送實體36〇中壓縮器 201014433 的内文已經更新’但是封包資料聚合協定接收實體32〇中解壓縮器 的内文卻仍未更新。為了解決這個問題，在下列敘述中提出兩個解 決方案。 [解決方案4]:當回復於無線鏈路控制認可模式下所映射之資 料無線承載之後，封包資料聚合協定傳送實體36〇會對標頭壓縮協 定進行重置，而封包資料聚合協定接收實體320會對標頭解壓縮協 定進行重置。 Ο [解決方案5]:當回復於無線轉路控制認可模式下所映射之資 料無線承載之後，標頭壓縮協定與標頭解壓縮協定並不會被重置。 若因無線鏈結控制重建而接收到脫序之封包資料聚合協定服務資料 單元，則封包資料聚合協定傳送實體360不會在一重排緩衝器 (reordering buffer)中對該已接收封包資料聚合協定服務資料單元執 行-標頭解壓縮程序。用戶設備31〇另包含有相關於該已接收封包 資料聚合協定服務資料單元的—計時n Diseard—Timei_，其中，當回 _復於無線鏈路控制認可模式下所映射之資料無線承載時，計時器 Diseani—Timei· 便在該重排緩衝器中重新排列該些已接 收脫序封包資料聚合賴版務聽觀以產生已接收之在序的封包 資料聚合協定服務資料單元。在計_ DiseanLTimei>計時完畢時， 封包資料聚合協定接收實體32〇會錢重排緩衝器巾觸些已接收 之在序的封包資合協定服務資料單元執行—標頭紐縮程序， 並在解壓縮完畢後再傳送該已接收之在序的封包資料聚合協定服務 資料單元給上層通訊層。 第6圖了上述的解決方案4與解決方案5，而第ό圖為依據 201014433 本發明之另—實施例在一無線通訊系統中重新建立一無線資源控制 連線程序後將封包資料聚合協定之運作同步化的方法之流程圖。該 方法包含下列步驟： 步驟602 :回復於無線鏈路控制認可模式下所映射之一資料無線承 載。 步驟604 :在回復該資料無線承載之後，封包資料聚合協定接收實 體中的標頭解壓縮程序無法正常運作。 ©步驟610 :對標頭壓縮協定與標頭解壓縮協定進行重置。 步驟620 :在回復於無線鏈路控制認可模式下所映射之一資料無線 承載之後’起始一計時1 I^iscard_Timer來重新排列已接 收之封包資料聚合協定腋務資料單元以產生已接收之在 序的封包資料聚合協定服務資料單元。 步驟622 :在時器Discard_Timer計時完畢時，對該些已接收之在序 的封包資料聚合協定服務資料單元執行一標頭解壓縮程 ❹ 序。 在一無線資源控制連線重建程序中，必然會得到一相對應之新的 基鑰(base-key)KeNB 〇 然而，若狀態變數Next_PHCP_TX_SN、 T\JIFN、NextJOCi^J^SN J^i；RXJIFN 未被重置為零，該新 的基鎗KeNB的生命期(lifetime)則舍因可使用之超框數(Hyper Frame Number，HFN)及序號(Sequence Number)空間的浪費而減 少。狀態變數Next_PDCP_TX_SN指出了下一個封包資料聚合協定 服務資料單元的封包資料聚合協定序號。狀態變數TX_HFN指出了 . 用以產生該些封包資料聚合協定資料單元所使用之COUNT數值的 13 201014433 ♦ 超框數。狀態變數Next—PDCP—RX一SN則指出了該封包資料聚合協 定接收實體所崎下—轉到的轉資料聚合協魏務資料單元之 封包資料聚合财序號。:狀態魏R^_HFN彳旨iij 了収產生該些已 接收封包資料聚合協定資料單元所使用之c〇UNT數值的超框數。 為避免以上所述之金綱低效率使用方式，下面提出了—個解決方 案。 [解決方案6]:當回復於無線鏈路控制認可模式下所映射之資 ❾料無線承載之後’封包資料聚合協定傳送實體36〇分別將狀態參數 Next—PHCP—TX一SN以及TX一HFN重置為起始值，而封包資料聚合 協定接收實體320分別將狀態參數Next—PHCP—狀―SN以及 RXJiFN重置為起始值’:: ：意， *， ·! j ,· 第7圖繪示了上述的解決方桊其包含下列步驟： 步驟702 :回復於無線鏈路控制認可模式下所映射之一資料無線承 載。 ❹步驟704 .新的基瑜KeNB因可使用的超框數以及序號空間的浪費 而減少。 步驟710 :分別將狀態參數Next_pHCP_TX_SN、TX_HFN、 Next_PHCP_RX_SN以及RX_HKN重置為起始值。 如上所述’在一無線資源控制連蟓重建程序中，必然會得到一相 對應之新的基錄KeNB，而此一新的基输KeNB亦會產生一個新的 加密金鑰。然而，在解決方案1〜解決方案3中，無法明確決定使 用新的或是舊的加密金鑰來對該些重傳的封包資料聚合協定資料單 元加密以及解密。為了解決這個問題，下面提出了一個解決方案。 201014433 [解決方案7]:該些重傳的封包資料聚合協定資料單元係使用 -個新的加密金鑰來加密，射此—新的加密金_經由無線資源 控制連線重建程序中所差生之新鑰所產生。 第8圖繪示了上述的^決方-7，其包含下列步驟： 步驟802 :執行一無線資源控制連線重建程序。 步驟804 :在回復於無線鏈路控制認可模式下所映射之一資料無線 承載之後，重新傳送一組未被成功接收的指定封包資料 ® 聚合協定服務資料單元。 步驟806 :依據該無線資源控制連線重建程序產生一個新的墓鑰， 並經由該新的基鑰來產生一個新的加密金鑰。 步驟810 :使用該新的_來對該些重傳之封包資料聚合協定資 單元進行加t,。 d 在回復於無線鏈路控制認可核式下所映射之一資料無線承載之 後，封包資料聚合協定接收實體32〇中的標頭解壓縮程序可能無法 〇正確運作。舉例來說，封包資料聚合協定接收實體360因無線鏈結 失敗而未能成功傳送五個已壓縮封包資料聚合協定服務資料單元， 封包資料聚合協定傳送實體巾壓㈣軸文已被更新而封包資 料聚合協定接收實體320中解壓縮器的内文則未更新。為解決這個 問題，以下提出了一個解決方案。 [解決方案8]:當回後於無線鏈路控制非認可模式下所映射之 資料無線承載之後’魏資料聚合龄傳送實體對標頭壓縮協Link Control (RLC) layer and a medium access control (Medium Access c〇ntr〇1, MAC) layer 0 201014433 Figure 2 is a schematic diagram of the radio resource control connection re-establishment procedure of the long-term evolution system of the technology. As shown in Figure 2, if a RRC connection is interrupted due to a wireless key failure, a RRC-Wireless Resource Control Connection Re-establishment procedure is required to reestablish the RRC connection. First, the user equipment (UE (10) transmission—requires the benefit line resource control connection reestablishment message to the Evolved Universal Terrestrial Radio Access Network (£ 码) Π0. Upon receiving the request for the RRC connection re-establishment message, the evolution The universal terrestrial wireless access network 12G responds to the wireless-source control connection re-establishment message to the user equipment 110. When receiving the RRC connection connection re-establishment message, the user equipment 11 immediately responds (rc_e)- - Transmit radio bearer (Signaling Radi. Be·D SRm, and the lower-layer communication misweye (10) line_ to immediately apply the previously configured algorithm to restart the security mechanism (including integrity protection protection) Ciphering, in other words, the user equipment 11 〇 next received and sent messages will be integrity protected and encrypted. After that, the user equipment ιι〇 send-wireless hybrid connection completion message to inform the evolution The wireless connection control network of the wireless access network 120 has been established again. In order to reply to all the radio bearers except the first-send wireless service SRB1 & (RadiQbe bribe), the evolved universal terrestrial wireless access network 120 reads a radio resource control connection re-group after the completion of the resource control connection re-establishment, wherein the radio resource control connection reconfiguration procedure Used to modify the RRC connection. However, in some cases, there is no clear definition of how to reply to the radio bearer and data radio bearer after the completion of the RRC connection reestablishment (DataRadi〇Bearer, DRB And subsequent RRC connection reconfiguration procedures. For example, 'If the user equipment no is hand-verified by the ------------ The context of the compressor in the transmitting PDCPentity has been updated, and the context of the decompressor in the receiving PDCP entity is not updated. Therefore, the header decompressions of the packet data aggregation protocol receiving entity cannot be answered after replying to the radio bearer The packet data aggregation protocol service data unit (PDCP SDU) is properly decompressed. Therefore, a mechanism for synchronizing the operation of the packet data aggregation protocol 0 after the radio resource control connection is reestablished is necessary. Therefore, one of the objects of the present invention is to replace the method of synchronizing the operation of the aggregation protocol with the related device in the wireless communication system after the RRC connection re-establishment procedure to solve the aforementioned problem. According to an embodiment of the present invention, a communication method for an evolved universal terrestrial wireless access network is disclosed, which is used to aggregate packet data after reestablishing a wireless resource control connection procedure with a user equipment. The operation of the agreement is synchronized. The communication method includes: when a RRC connection is re-established, starting a RRC reconfiguration procedure to reply to all radio bearers except a first transmit radio bearer; and when replying to the radio link When one of the data radio bearers mapped in the control mode is controlled, a group of pointing packets _aggregation protocol service data unit is retransmitted to the user equipment. According to another embodiment of the present invention, a communication method for a user equipment is disclosed, which is used to aggregate packet data after re-establishing a radio resource control connection procedure with an evolved universal terrestrial wireless access network. The operation of the agreement is synchronized. The communication 201014433 method includes: when a wireless negative source control connection is re-established, a radio resource control reconfiguration procedure is initiated to alleviate all radio bearers except a Qin-mail radio bearer; when replying to the radio link control approval When one of the data radio bearers is mapped in the mode, the packet data aggregation protocol service data unit specified by one of the evolved universal terrestrial wireless access networks is received. According to another embodiment of the present invention, it is disclosed that the evolved coffee land wireless access network is used to synchronize the operation of the packet data aggregation protocol after the wireless device is re-established with the wireless device. Chemical. The evolved universal terrestrial wireless access network includes: when the RRC connection is re-established, a radio resource control reconfiguration procedure is initiated to generate a second-line bearer in addition to the one-issue radio bearer. And means for retransmitting a specified set of packet data aggregation protocol service data units to the user equipment when the data is transmitted in the link control approval mode. In accordance with another embodiment of the present invention, a user equipment is disclosed for synchronizing the operation of a packet data aggregation protocol in a = _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . The user equipment includes: when it is used to sue the new red, the screaming-------------------------------------------------- And means for transmitting and receiving information from the Evolved Universal Terrestrial Radio Connected Co., Ltd. According to the twisted 7, the present invention provides a shop for re-establishing the benefits of the line in the wireless communication system, and the platform provided by Sakamoto Ride, and the evolution of the wireless access source network 7 201014433 and the user equipment in the wireless f source control line reconstruction After the program, the operation of the packet data aggregation protocol can be synchronized. In this way, the (four) questions can be avoided. For example, the problem of missing the data aggregation station data unit in the wireless link control approval mode, the header decompression fails. The _, the fine scale of money is low and the key issue is added. [Embodiment] FIG. 3 is a block diagram of a wireless communication number system 3A according to an embodiment of the present invention. The wireless communication system can be a long term evolution system. However, this is not intended to limit the scope of the present invention. The wireless communication system 3 can also be other types of wireless communication systems. The wireless communication system 300 includes, but is not limited to, a user equipment 310 and an evolved universal terrestrial wireless access network. The evolved universal terrestrial wireless access network 350 includes a packet data aggregation protocol transmitting entity 36〇, and the user equipment 31〇3 has a packet data cluster. The detailed operation of the packet data aggregation protocol transport entity 360 and the packet data aggregation protocol reception _ 32 将 will be explained in the following embodiments. Geisha Note that in the following embodiments, Figures 4 to 8 are data radio bearers (Data, which are mapped back to the Radio Link Control (RLC) Acknowledge Mode (AM). Example diagram of RadioBearer, DRB), Figure 9 to Figure 1 is an example diagram of the data radio bearer mapped in the Unackn〇wledge Mode (UM) of the radio link control, and the figure A schematic diagram of an example of responding to a first transmit radio bearer (Signaling r God Bearer i) srbi and a second transmit k bearer (Signaling Radio Bearer 2) SRB2. Referring to FIG. 4, the packet data aggregation protocol service data unit (PDCP SDU) received by the entity 320 of the packet data aggregation protocol of FIG. 3 is shown. As shown in the figure 201014433 4, the five packet data aggregation protocol service data units 41 〇 45 45 are transmitted by the packet data aggregation protocol transfer entity 360 in an in-sequence manner. In this embodiment, the packet data aggregation protocol service data unit 41〇450 is transmitted in the wireless link control approval mode, so that the packet receiving protocol entity 32 does not need to send a radio link control. The reception situation of these data aggregation agreement service data units. After replying to one of the data radio bearers mapped in the radio link control approval mode, the packet data aggregation protocol service data units 42〇 and 45〇 are successfully received, and the packet data aggregation protocol service data units 410, 430, and 440 are The wireless data link failed to be successfully received by the packet data aggregation protocol receiving entity 32. However, the packet data aggregation agreement bribe unit was successfully received, but it has not been confirmed by the lower layer communication layer in the entity 32 of the packet data aggregation agreement. In order to solve the ugly ugly of the packet data aggregation protocol service, three solutions are proposed below. / [Solution 1]: Lai _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Package data aggregation agreement service data%' which is in the replenishment of the package #material aggregation agreement data unit (four) (four) coffee review it, PDU wealth - the lower track _ money success pass = packet _ _ _ _ yuan towel, _ material polymerization age Service resources, the ranking of the early 410 is the first. This solution will be a problem with the loss of the service data unit, but it will be watched because of the action of the necessary tongue-and-shoulder-like unit. _ Age = "Breaking and paying service information [Solution 2]: #回于无__ After the radio bearer is mapped in the mode, the packet data aggregation protocol transmitting entity 36 retransmits the packet data aggregation protocol service data units 410 to 450, and the packet data aggregation that has not been confirmed as the successful transmission by the lower layer communication layer The protocol data unit corresponds to the packet data collection data unit, that is, only the packet (4) aggregate mosquito service (four) single: 41〇, 430 and 440 will be retransmitted. This solution can improve the first solution However, it still causes some waste of innocent assets. ❹ [Solution 3]: After the data is mapped to the data link mapped in the silk link (4), the packet data aggregation protocol receiving entity 32〇 is transmitted by The packet-aged status report set by the radio resource control is sent to the packet (4) aggregation protocol transmission entity. After that, the packet data aggregation protocol transmission entity 360 transmits the packet. The packet data aggregation agreement service indicated in the status report of the agreement is not yet received: the bill of materials is replaced by 5, and the packet data aggregation agreement service data unit gamma and mo will be reported according to the miscellaneous data aggregation agreement status report. If there is a solution in the solution and the solution 3, the mosquitoes on the riding layer need to be transmitted in the order, then the packet data is aggregated; the body 32 () needs to be received out of order ( The packet data of the sequence is decrypted and re-arranged. The data is backed up in the radio link control approval mode. The data is carried over the radio bearer/temporary device to rearrange the received packet data. Aggregation Protocol Service When the timer expires, the ordering of the packet data aggregation protocols will be completed and the received packet data aggregation protocol service data will be transmitted to an upper communication layer. Figure 5 deducts the above solution 解决 ~ Solution 3, ❿ Figure 5 is based on the X-month implementation of a re-establishment of a radio resource control system in an axe-free communication system * V. l· ” Agreement flowchart showing a method for synchronizing the well after the program packet data lines 201,014,433 polymerization. The method includes the following steps: Step 502: Respond to one of the data wireless bearers mapped in the wireless link control approval mode. Step Group ♦ The packet data aggregation protocol service data unit was not successfully received due to the failure of the wireless link. Step training: from the corresponding packet data, the data unit has not been used by the next layer. The packet concentrating service data unit transmitted by the layer is confirmed to re-send the first packet data aggregation agreement service. The unit and all the packet data aggregation agreement service data units located behind it. Step 52G. The retransmission packet will aggregate the protocol service data unit, and the corresponding packet aggregation protocol data unit has not been broken by the lower communication layer to consider the successfully transmitted packet data aggregation protocol service data unit. 10 steps: the transmission is set by the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Step 532: 4 The new transfer table _ the package agreement status report is indicated as the packet data aggregation agreement service data unit that has not yet been received. For a data radio bearer mapped under the radio link control grant mode, the header decompression procedure in the packet data aggregation protocol receiving entity 32〇 may not function properly after replying to the data radio bearer. For example, the packet data aggregation protocol delivery entity 360 cannot successfully transmit the five compressed packet data aggregation protocol service data units because of the wireless link failure, and the context of the compressor data aggregation protocol transmission entity 36〇 compressor 201014433 has been updated. 'But the body of the decompressor in the packet data aggregation protocol receiving entity 32〇 has not been updated. In order to solve this problem, two solutions are proposed in the following description. [Solution 4]: After replying to the data radio bearer mapped in the radio link control approval mode, the packet data aggregation protocol transmitting entity 36 resets the header compression protocol, and the packet data aggregation protocol receiving entity 320 The header decompression protocol is reset. Ο [Solution 5]: The header compression protocol and header decompression protocol will not be reset after replying to the data radio bearer mapped in the RRC mode. If the out-of-order packet data aggregation protocol service data unit is received due to the wireless link control re-establishment, the packet data aggregation protocol transport entity 360 does not aggregate the received packet data in a reordering buffer. Service Data Unit Execution - Header Decompression Procedure. The user equipment 31 further includes a timing n Diseard-Timei_ related to the received packet data aggregation protocol service data unit, wherein when the data carrier is mapped to the radio bearer mapped in the radio link control approval mode, the timing is The Diseani-Timei will rearrange the received out-of-order packet data aggregation in the rearrangement buffer to generate the received packet data aggregation protocol service data unit. When the timer _ DiseanLTimei> is completed, the packet data aggregation agreement receiving entity 32 〇 重 重 重 巾 巾 巾 巾 巾 巾 巾 巾 巾 巾 巾 巾 巾 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已 已After the compression is completed, the received packet data aggregation protocol service data unit is transmitted to the upper communication layer. Figure 6 is a solution of the above solution 4 and solution 5, and the figure is based on another embodiment of the invention according to 201014433. After re-establishing a radio resource control connection procedure in a wireless communication system, the packet data aggregation protocol is A flow chart of the method of synchronizing operations. The method includes the following steps: Step 602: Responding to one of the data wireless bearers mapped in the radio link control approval mode. Step 604: After replying to the data radio bearer, the header decompression program in the packet data aggregation protocol receiving entity cannot operate normally. © Step 610: Reset the header compression protocol and the header decompression protocol. Step 620: After reverting to one of the data radio bearers mapped in the radio link control approval mode, 'starting a time 1 I^iscard_Timer to rearrange the received packet data aggregation protocol data unit to generate the received data. Ordered packet data aggregation agreement service data unit. Step 622: Perform a header decompression procedure for the received packet data aggregation protocol service data units when the timer Discard_Timer is timed. In a RRC connection re-establishment procedure, a corresponding new base-key KeNB will be obtained. However, if the state variables Next_PHCP_TX_SN, T\JIFN, NextJOCi^J^SN J^i; RXJIFN Without being reset to zero, the lifetime of the new base gun KeNB is reduced by the waste of the Hyper Frame Number (HFN) and Sequence Number space that can be used. The state variable Next_PDCP_TX_SN indicates the packet data aggregation protocol sequence number of the next packet data aggregation protocol service data unit. The state variable TX_HFN indicates the number of COUNT values used to generate the packet data aggregation protocol data unit. The state variable Next_PDCP-RX-SN indicates the packet data aggregation number of the data aggregation agreement receiving entity to the packet data aggregation agreement. : Status Wei R^_HFN means to receive the number of superframes for the c〇UNT values used by the data elements of the received packet data aggregation protocol. In order to avoid the inefficient use of the Golden Gang described above, a solution is proposed below. [Solution 6]: After replying to the radio bearer mapped in the radio link control approval mode, the packet data aggregation protocol transmitting entity 36 重 the state parameters Next-PHCP-TX-SN and TX-HFN respectively The initial value is set, and the packet data aggregation agreement receiving entity 320 resets the state parameters Next_PHCP_SN and RXJiFN to the starting value ':: : Italian, *, ·! j , · Figure 7 The above solution is shown to include the following steps: Step 702: Respond to one of the data radio bearers mapped in the radio link control approval mode. Step 704. The new Kiyu KeNB is reduced due to the amount of over-frames that can be used and the waste of the sequence space. Step 710: Reset the status parameters Next_pHCP_TX_SN, TX_HFN, Next_PHCP_RX_SN, and RX_HKN to the starting values, respectively. As described above, in a RRC re-establishment procedure, a new corresponding base record KeNB is inevitably obtained, and a new base KeNB also generates a new cryptographic key. However, in Solution 1 to Solution 3, it is not possible to explicitly decide to use a new or old encryption key to encrypt and decrypt the retransmitted packet data aggregation protocol data unit. In order to solve this problem, a solution is proposed below. 201014433 [Solution 7]: The retransmitted packet data aggregation protocol data unit is encrypted with a new encryption key, and this is the new encryption _ via the RRC connection re-establishment program. The new key is generated. Figure 8 illustrates the above-described method-7, which includes the following steps: Step 802: Perform a radio resource control connection reestablishment procedure. Step 804: After reverting to one of the data radio bearers mapped in the radio link control approval mode, retransmitting a set of specified packet data ® aggregation protocol service data unit that has not been successfully received. Step 806: Generate a new tomb according to the radio resource control connection reestablishment procedure, and generate a new encryption key via the new base key. Step 810: Use the new _ to add t to the retransmitted packet data aggregation protocol units. d After replying to one of the data radio bearers mapped under the radio link control approval mode, the header decompression procedure in the packet data aggregation protocol receiving entity 32〇 may not function properly. For example, the packet data aggregation protocol receiving entity 360 fails to successfully transmit the five compressed packet data aggregation protocol service data units due to the failure of the wireless link, and the packet data aggregation protocol transmission entity towel pressure (4) the axis text has been updated and the packet data The context of the decompressor in the aggregation agreement receiving entity 320 is not updated. To solve this problem, the following proposes a solution. [Solution 8]: After returning to the radio bearer of the data mapped in the radio link control non-acceptance mode, the WE data aggregation age transmitting entity pairs the header compression association

定進行重置，以及封包資料聚合協定接收實體32〇對標頭解壓縮 定進行重置。 V 15 201014433 Λ 第示了上述的解財案9,其包含下列步驟·· 步驟 : _鱗鏈路控_領灯職狀—資料無線 承載。 步驟_ :在咖_鱗承载絲，封包娜合協定接收實 體中的標頭’解壓縮程序無法正常運作。 步驟910 ··對標頭壓縮協定與標頭解壓縮協定進行重置。 在此實施例中’映射於無線鍵路控制非認可模式之一資料無線 ❹承載被回復。如同之前的敘述，在此必然會得到對應該無線資源控 制連線重建程序之新的基錄KeNB，然而，若狀態變數、The reset is scheduled, and the packet data aggregation protocol receiving entity 32 resets the header decompression. V 15 201014433 Λ The above-mentioned solution 9 is shown, which includes the following steps: Steps: _ scale link control _ collar light status - data wireless bearer. Step _: In the coffee _ scale bearing silk, the header of the receiving contract in the receiving body 'decompression program' does not work properly. Step 910 · Reset the header compression protocol and the header decompression protocol. In this embodiment, the data radio bearer is mapped to one of the wireless key control non-acceptance modes. As mentioned in the previous section, it is inevitable that a new base record KeNB corresponding to the radio resource control connection re-establishment procedure will be obtained. However, if the state variable,

Next_PHCP_TX_SN、TX jiFN、Next_PDCP一RX SN 以及 rx_HFN 未被重置鱗’職―靳的絲KeNB的生命麵會因可使用的超 框數及序號空間的浪費而減少。為避免以上敘述中金鑰的低效率使 用’下面提出了一個解决方案。 [解決方案9]:當自;4於無聽路控辦認可赋下所映射之 ❹貝料無縣載之後，封包資概合協定傳送實體分聰狀態參 數Next_PHCP_TX_SN以及TX_HFN 4置為起始值’而封包資料聚 合協定接收倾32G分麟祕參數Nextj>Hn汹以及 RX_HFN重置為起始值。 第10圖繪示了上述的解決方案9 ,其包含下列步驟： 步驟1002 .回復於無線鏈路控制非認可模式下所映射之一資料無 線承載。 步驟1004 :新的基鑰瓦_之生命期因可使用的超框數以序號空 - 間的浪費而減少。 16 201014433 步驟 1010 :分別將狀態參數Next_PHCP_TX_SN、TX_HFN、 Next_PHCP_RX_SN以及RX_HFN重置為起始值。 在此實施例中，回復了一第一發信無線承載SRB1及一第二發信 無線承載SRB2。如上所述，在一無線資源控制連線重建程序中， 必然會得到一相對應之新的基錄· KeNB ’而此一新的基矯KeNB亦 會產生一個新的加密金蠄。然而’:若科態變數Next_PHCP__TX_SN、 TX—HFN、Next_PDCP_RX_SN以及RX_HFN未被重置為零，則該 0新的基錄KeNB的生命期會因可使用的超框數及序號空間的浪費而 減少。為避免以上敘述中金瑜的低效率使用，下面提出了一個解決 方案。 [解決方案10]:在回復了第一發信無線承載SRB1以及第二發 信無線承載SRB2之後，封包資料聚合協定傳送實體36〇分別將狀 態參數Next_PHCP_TX_SN以及TXJHFN重置為起始值，而封包資 料聚合協定接收實體320分別將叙態參數\6乂1_?1^?_1〇^8]^以及 RXJIFN重置為起始值7 “ 第11圖繪示了上述的解決方案1〇，其包含下列步称： 步驟1102 :回復第一發信無線承載SRB1以及第二發信無線承載 SRB2 ° 步驟1104 :新的基鑰KeNB之生命期因可使用的超框數以及序號 空間的浪費而減少。 步驟 1110 .分別將狀態參數 Next_PHCP_TX_SN、TX IIFN、 Next—PHCP一RX一SN以及RX_HFN重置為起始值。 17 201014433 修改插入其他步驟或是將多個步驟合併為一個步^述的方法可加以 並實施例僅編崎述本發明之細徵的範例， 疋本發明之範_，對熟f該領域者而言，各種— 通訊系統令，於無線資源控制連線重建程序後 協定Next_PHCP_TX_SN, TX jiFN, Next_PDCP-RX SN, and rx_HFN are not reset. The life surface of the silk KeNB is reduced due to the waste of available superframes and serial space. In order to avoid the inefficient use of the key in the above description, a solution is proposed below. [Solution 9]: After the 4th no-loading of the mapped mussels from the unrecognized road control office, the packet-contracting transfer entity splits the state parameters Next_PHCP_TX_SN and TX_HFN 4 as the starting values. 'And the packet data aggregation protocol receives the 32G sub-parameters Nextj>Hn汹 and RX_HFN reset to the starting value. Figure 10 illustrates the above solution 9, which includes the following steps: Step 1002. Revert to one of the data wireless bearers mapped in the radio link control non-acceptance mode. Step 1004: The lifetime of the new base key _ is reduced by the amount of over-frames that can be used. 16 201014433 Step 1010: Reset the status parameters Next_PHCP_TX_SN, TX_HFN, Next_PHCP_RX_SN, and RX_HFN to the starting values, respectively. In this embodiment, a first transmit radio bearer SRB1 and a second transmit radio bearer SRB2 are replied. As described above, in a RRC connection re-establishment procedure, a corresponding new base record KeNB will be obtained and the new base correction KeNB will also generate a new encryption key. However, if the state variables Next_PHCP__TX_SN, TX_HFN, Next_PDCP_RX_SN, and RX_HFN are not reset to zero, the lifetime of the new base record KeNB is reduced due to the waste of the available number of frames and the serial number space. In order to avoid the inefficient use of Jin Yu in the above description, a solution is proposed below. [Solution 10]: After replying to the first outgoing radio bearer SRB1 and the second transmitting radio bearer SRB2, the packet data aggregation protocol transmitting entity 36 重置 resets the state parameters Next_PHCP_TX_SN and TXJHFN to the starting values, respectively, and the packet The data aggregation agreement receiving entity 320 resets the state parameter \6乂1_?1^?_1〇^8]^ and RXJIFN to the start value 7 respectively. FIG. 11 illustrates the above solution 1〇, which includes The following steps are as follows: Step 1102: Reply to the first outgoing radio bearer SRB1 and the second transmit radio bearer SRB2. Step 1104: The lifetime of the new base key KeNB is reduced due to the available number of hyperframes and the waste of the sequence space. Step 1110: Reset the status parameters Next_PHCP_TX_SN, TX IIFN, Next_PHCP-RX-SN, and RX_HFN to the starting values respectively. 17 201014433 Modifying the steps of inserting other steps or combining multiple steps into one step can be performed. And the examples only exemplify the examples of the invention, and the invention is based on the invention. For those skilled in the art, various communication system commands are agreed upon after the radio resource control connection reconstruction procedure.

之運作同步化機制上的修改，只要遠 貝村H 上的變化仍屬於本發明的麟之内。，之精神’這些設計 綜上所述，本發明提供了 -種在一無線通訊系統中，於無線資源 控制連線重建後，將封包資料聚合協定之運作同步化的方法就相 關裝置。在朗本發_揭露賴制之後，上述由無線資源控制連 線重建程序所產生關題皆可迎刀而解，舉例來說，在無線鍵結控 制認可模式中遺失封包資料聚合協定服務資料單元的問題可經由解 決方案1〜解決方案3來處理；標頭解_失敗的問題則可應用解 決方案4〜解決方案5及解決方案义來處理；金鑰使用效率低下的 問題可由解決方案6、_方案9輿^決方案1G來化解；而加密金 餘問題則可儀解決方案7來解決。於是，在無線魏控制連線重 建後，封包資料聚合協定之運作便同步化以解決前述的問題。 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所 做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖為先前技術之長期演進系統中的無線介面協定的示意圖。 第2圖為先前技#f之長期演進系統中的無線資源控制連線重建程序 18 ： 201014433 的示意圖。 ^圖為依據本發明之—實關的無線通訊齡統的方塊圖。 第4圖為封包資料聚合協定接收實體所接收之封包資料聚合協定服 務資料單元的示意圖。 第5圖為依據本發明之—實補而在—無線通喊統巾於無線資源 控制連線重建後將封包資料聚合協定之運作同步化的方法的 流程圖。 ❹ 圖為依據本發明以—實施綱在-紐im財於無線資 源控制連線重建後將封包資料聚合協定之運作同步化的方法 的流程圖。 第圖為依據本發明之另一實施例而在一無線通訊系統中於無線資 源控制連線4建後將封包龍肢龄之運侧步化的方法 的流程圖。 第圖為依據本發明之另—實施例而在一無線通訊系統中於無線資 ❹ 源控嫩線重建麵封包紐聚合龄之運侧步化的方法 的流程圖。 第9圖為依據本發明之i ▲ Μ v K另一實施例而在一無線通訊系統中於無線資 原控制連線重建後將封包資料聚合協定之運作同步化的方法 的流程圖。 圖2依據本發明之另一實施例而在一無線通訊系統中於無線 貝源控制連線重建後將封包資料聚合協定之運作同步化的方 法的流程圖。 Μ圖為依據本發明之另一實施例而在一無線通訊系統中於無線 201014433 資源控制連線重建後將封包資料聚合協定之運作同步化的方 法的流程圖。 ' 1' 【主要元件符號說明】 110 用戶設備 120 演進通用陸地無線接取網路 300 無線通訊號系統 310 用戶設備 ❹ 320 350 封包資料聚合協定接收實體 演進通用陸地無線接取網路 360 封包資料聚各協定#送實^ 410-450 封包資料聚合協定服務資料單元 502-532、602-622、702-710、802-810、902-910、1002-1010、 1102-1110 步驟 20The modification of the operation synchronization mechanism is as long as the change on the remote village H is still within the scope of the present invention. The spirit of these designs In summary, the present invention provides a method for synchronizing the operation of a packet data aggregation protocol in a wireless communication system after the reconstruction of the RRC connection. After the Langbenfa _ disclosure system, the above-mentioned problems arising from the wireless resource control connection re-establishment procedure can be solved. For example, in the wireless key control approval mode, the packet data aggregation protocol service data unit is lost. The problem can be handled through solution 1 to solution 3; the problem of header solution_failure can be solved by applying solution 4~solution 5 and solution meaning; the problem of inefficient use of key can be solved by solution 6. _Scheme 9 舆^ Solution 1G to resolve; and the encryption problem can be solved by Solution 7. Thus, after the wireless control connection is rebuilt, the operation of the packet data aggregation protocol is synchronized to solve the aforementioned problems. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should fall within the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a wireless interface protocol in a prior art long term evolution system. Figure 2 is a schematic diagram of the Radio Resource Control Connection Reestablishment Procedure 18: 201014433 in the Long Term Evolution System of the prior art #f. The figure is a block diagram of a wireless communication age based on the present invention. Figure 4 is a schematic diagram of the packet data aggregation agreement service data unit received by the receiving entity of the packet data aggregation protocol. Figure 5 is a flow diagram of a method for synchronizing the operation of a packet data aggregation protocol after the wireless resource control connection is reestablished in accordance with the present invention. The figure is a flow chart of a method for synchronizing the operation of a packet data aggregation protocol after the reconstruction of the wireless resource control connection in accordance with the present invention. The figure is a flow chart of a method for side-by-step processing of a packet of a dragon's limbs after a wireless resource control connection 4 is constructed in a wireless communication system in accordance with another embodiment of the present invention. The figure is a flow chart of a method for stepping in a wireless communication system in a wireless communication system in accordance with another embodiment of the present invention. Figure 9 is a flow diagram of a method for synchronizing the operation of a packet data aggregation protocol after a wireless resource control connection re-establishment in a wireless communication system in accordance with another embodiment of the present invention. 2 is a flow diagram of a method for synchronizing the operation of a packet data aggregation protocol after a wireless home source control connection re-establishment in a wireless communication system in accordance with another embodiment of the present invention. The diagram is a flow diagram of a method for synchronizing the operation of a packet data aggregation protocol after a wireless 201014433 resource control connection re-establishment in a wireless communication system in accordance with another embodiment of the present invention. ' 1' [Main component symbol description] 110 User equipment 120 Evolved universal terrestrial wireless access network 300 Wireless communication number system 310 User equipment ❹ 320 350 Packet data aggregation protocol Receive entity evolution Universal terrestrial wireless access network 360 Packet data collection Each agreement #送实^ 410-450 packet data aggregation agreement service data unit 502-532, 602-622, 702-710, 802-810, 902-910, 1002-1010, 1102-1110 step 20

Claims (1)

201014433 七、申請專利範圍： 1. 一種應用於一演進通用陸地無線接取網路(Evo丨veduMTS Terrestrial Radio Access Network, Ε-UTRAN)之通訊方法’用以在 與一用戶設備(User Equipment，UE)重新建立一無線資源控制 (Radio Resource Control，RRC)連線程序後將封包資料聚合協定 (Packet Data Convergence Protocol，PDCP)之運作同步化，該通訊 方法包含有： φ 當一無線資源控制連線重新建立時’起始一無線資源控制重新組 態程序來回復除了-第-發信無線承載(Signaling Radi〇 Bearer卜SRB1)以外的所有無線承載； 當回復於一無線鏈路^制(Radi0 Control，RLC)認可模式 (Acknowledge Mode，AM)下所映射之一資料無線承載(Data ’重新傳送—組指定之封包資料聚合協 定服務資料單元(ServiceDataUnit，smj)給該用戶設 2. 如申請專利範圍第丨項所述之通訊方法，其中該組指定之封包資 料聚合協定服務資料單元包含有相對應的封包資料聚合協定資 料單元尚未被-下層通訊層確認為成功傳送的複數個封包資料 聚合龄服務㈣單元t，排序在第—_封包雜聚合協定服 務資料單元以及位於其後所有_包資料聚合協定服務 3·如㈣專觀項所述之通财法，其中触指定之封包 料，合協定服務資料單元包含有相對應的封包資料聚合協定資 料單元尚未被-下層通訊廣確認為成功傳送的至少一封包資料 21 201014433 Λ 聚合協定服務資料單元。 4. 如申睛專利範圍第1項所述之通訊方法，另包含有： 接收發自该用戶設備之一封包資料聚合協定狀況報告； 其中該組指定之封包資料聚合協定服務資料單元包含有在該封 包資料聚合協定狀況報告中被指示為尚未收到之封包資料聚 合協定服務資料單元。 5. 如申清專利範圍第1項所述之通訊方法，另包含有： ❹ 當回復於該無線鏈路控制認可模式下所映射之該資料無線承載 或回復於-無線鏈路控制非認可模式(Unackn〇wledgedMQde， UM)下所映射之-資料無線承載時，對一標頭壓縮協定 (Header Compression Protocol)進行重置。 • I· * t i 6. 如申請專利範圍第1读所述之4¾方法，另包含有： 當回復於該無線鏈4控制認可械式下所映射之該資料無線承載 或回復於一無線鍵路控制非認可模式下所映射之一資料無線 承載時’分別將複數個狀態參數Next_PHCP__RX SN、 ® TX-HFN、Next_PDCP_RX_SN 以及 RX HFN 重置為起始值。 7. 如申請專利範圍第6項所述之通訊方法，其中該資料無線承載包 含有該第一發信無線承載與一第二發信無線承載(Signaling Radio Bearer 2，SRB2)。 8. 如申請專利範圍第1項所述之通訊方法，另包含有： . ; · . .4.. 依據該無線資源控制連線重新途丘程序來產生一新的基錄 (base-key，KeNB)，並經由該鱗的基鑰來、產生一加密金錄 (ciphering key);以及 22 201014433 應用該加密金鑰來為重新傳送之封包資料聚合協定資料單元進 行加密。 9. 一種應用於一用戶設備(User Equipment，UE)之通訊方法，用以在 與一演進通用陸地無線接取網蹲(pvolved UMTS Terrestrial , v ·； Radio Access Network，另-UTR^Si)重新建立一無線資源控制 (Radio Resource Control，RRC)連線程序後將封包資料聚合協定 (Packet Data Convergence Protocol，PDCP)之運作同步化，該通 _ 訊方法包含有： 當一無線資源控制連線重新建立時’起始一無線資源控制重新組 態程序來回復除了 一第一發信無線承載(Signaling Radi〇 Bearer卜SRB1)以外的所有無線承載； 當回復於一無線鍵路控制(Radio Link Control, RLC)認可模式 {Acknowledge Mode, 之一資料無線承載(Data Radio Beai^ D#時，接政#該演進通用陸地無線接取網 路之一組指定之封包資料聚合協定服務資料單元(Service Data Unit，SDU)。 10. 如申請專利範圍第9項所述之通訊方法，其巾触指定之封包資 料聚合協定服務資料單元包含尚未被該用戶設備所成功接收的 封包資料聚合協定服務資料單元。 11. 如申請專利範圍第9項所述之通訊方法，更包含： 當回復於該無_路控綱领式下所_找㈣無線承載 時’傳送-封包資·合场況報告給該演進通用陸地無 線接取網路； 23 201014433 其中該組指定之封包資料聚合協定服務資料單元包含有在該封 包資料聚合協定狀況報告中被指示為尚未收到之封包資料聚 合協定服務資料單元。 12. 如申請專利範圍第9項所述之通訊方法，另包含有： 當回復於該無線鏈路控制認可辦式下所映射之該資料無線承載 或回復於一無線鏈路控制非媳可模式(Unackn〇wledged M〇de， UM)下所映射之一資料無線承載時，對一標頭解壓縮協定 ❹ （Header De-Compression Protocol)進行重置。 13. 如申請專利範圍第9項所述之通訊方法，另包含有： 當回復於該無線鏈路控制認可模式下所映射之該資料無線承載 時，起始一計時器以重新排列複數個已接收之封包資料聚合 協定服務資料單元來產生複數個已接收之在序的封包資料聚 合協定服務資料單元；以及 當該計時器計時完，時，對該收之在序的封包資料聚合協 •定服務資料單元敏行一標頭g鏟縮程序。 14. 如申請專利範圍第9項所述之通訊方法，另包含有： 當回復於該無線鏈路控制認可模式下所映射之該資料無線承載 或回復於一無線鏈路控制非認可模式下所映射之一資料無線 承載時，分別將複數個狀態參數NextJ>HCP TX SN、 TX—HFN'NexU>D〇>_Rx_SN以及虹—刪重置為起始值。 15·如申請專利範_ 14項所述之通訊方法，其中該資料無線承載 包含有該第-發信無線承載與，第二發信無線承載⑸喊明 Radio Bearer 2，SRB2)。 24 201014433 16. -種演進賴齡鱗接取網路(EvGlved R—essNetw吨E_UTRAN) ’用以在與—用戶設備(版 Equipment，UE)重新建立一無線資源控制⑽也Res〇_ c〇咖l RRC)連線程序後將封包資料聚合協定(⑽贫她㈤觸隱 Protocol’PDCP)之運作js]步化’該演進賴陸地無線接取網路 包含有： 用以於一無線_貝源控制連線重新建立時，起始一無線資源控制重 ❹ 新組態程序來回復除了 一第一發信無線承載(Signaling Radio Bearer 1，SRB1)以外的所有無線承載的手段(means);以及 用以在回復於一無線鍵路控制(Radi〇 [扯Control，RLC)認可模 式(Acknowledge Mode，AM)下所映射之一資料無線承載 (Data Radio Bearer, DRB)時，重新傳送一組指定之pdcp服 務資料單元(Service Data Unit，SDU)給該用戶設備的手段。 17. 如申請專利範圍第16項所述之演進通用陸地無線接取網路，其 _ 中該組指定之PDCP服務資料單元包含有起始自具有相對應 PDCP協定資料單元^rotocolD^taUnit, PDU)尚未被一下層通訊 層確認為成功傳送之第一個PDCP服務資料單元的所有pDCp 服務資料單元。 18. 如申請專利範圍第16項所述之演進通用陸地無線接取網路，其 中該組指定之PDCP服務資料單元包含有尚未被一下層通訊層 確認為成功傳送之相對應PDCP協定資料單元的PDcp服務資料 單元。 19. 如申請專利範圍第16項所述之演進通用陸地無線接取網路，其 201014433 中該組指定之PDCP服務資料單元包含有在發送自該用戶設備 之一 PDCP狀況報告中被指示為尚未收到之pDcp服務資料單 元。 20. 如申請專利範圍第16項所述之演進通用陸地無線接取網路，另 包含有： 用以在回復於該無_路_認可赋下所映射之該資料無線 承載或回復於-鱗鏈路控制非認可模式(Unackn〇wledged ❹ 顧6，腿)下所映射之—靖無線承載時，對-標頭壓縮協 定(Header Compression Protocol)進行重置的手段。 21. 如申請專利範圍第16項所述之演進通用陸地無線接取網路，另 包含有： 用以在回復於該無線麟控制認可模式下所映射之該資料無線 承載或回復於一無線鏈路控制非認可模式下所映射之一資 料無線承載時，分別將複數個狀態參數 ^ Next„PHCP_TX_SN ^ TX_HFN ^ Next.PDCP_RX_SN A RX_HFN重置為起始值的手段。 22·如申請專利範圍第21項所述通用陸地無線接取網路，其 中該資料無線承載包含有該第一參信無線承載與一第二發信無 線承載(Signaling Radio Bearer 2，SRB2)。 23.如申請專利範圍第16項所述之演進通用陸地無線接取網路，另 包含有： 應用。一加密金鑰(ciphering㈣來為重新傳送之pDcp協定資料 單7C加密的手段，其中該加密金錄係依據該無線資源控制連 26 201014433 線重新建立程序所產生之一新的基鑰(base-key)而產生。 24. —種用戶設備(User Equipment, UE) ’用以在與一演進通用陸地無 線接取網路(Evolved UMTS Terrestrial Radio Access Network, E-UTRAN)重新建立一無線資源控制(Ra(ji〇 Resource Control， RRC)連線程序後將封包資料聚合協定(Packet Data Convergence Protocol，PDCP)之運作同步化，該用戶設備包含有： 用以於一無線資源控制連線重新建立時，回復除了 一第一發信無 ❹ 線承載(Slgnaling Radio Bearer 1，SRB1)以外的所有無線承載 的手段(means);以及 用以在回復於一無為‘控制(玟沾〇 Link C〇ntr〇i, rlc)認可模 式(Acknowledge Mode，AM)下所映射之一資料無線承載 (Data Radio Bearer，DRB)時’接收發自該演進通用陸地無線 接取網路之一組指定之PDCP服務資料單元(Seryice _ Unit，SDU)的手段。 25. 如申請專利範圍第24項所述之用戶設備，其中該組指定之pDcp 服務龍單元包含尚綠制戶賴職功減的pDCp服務 資料單元。 26. 如申請專利範圍第24读所述之用戶設備，另包含有： 用以在回餘該無線祕_認可模式τ所映射之該資料無線 承載時，傳送-PDCP狀況報告給該演進朝陸地無線接取 網路的手段，其中該組指定之咖卩服務資料單元包含有在 該奶〇>狀況報告中被指示為尚未收到之PDcp服務資料單 元0 27 201014433 27·如申請專利範圍第24項所述之用戶設備，另包含有： 用以在回復於該無線練路控制認:可槔式下所映射之該資料無線 承載或回復於一無線鏈路控制非認可模式(Unackn〇wledged Mode，UM)下所映射之-資料無線承載時，對-標頭壓縮協定 (Header Compression Protocol)進行重置的手段。 28·如申請專利範圍第24項所述之用戶設備，另包含一計時器，其 中當回復於該無線鏈路控制認可模式下所映射之該資料無線承 ❹ 載時，起始該計時器以重新排列複數個已接收之PDCP服務資料 單元來產生複數個已接收之在序的PDCP服務資料單元；以及當 該計時器計時完畢時，一標頭解壓縮程序會對該些已接收之在序 的PDCP服務資料皐git行處邊9 29.如申請專利範圍第24項所述之用戶設備，另包含有： 用以在回復於該無線鏈路控制認可模式下所映射之該資料無線 承載或回復於一無線鏈路控制非認可模式下所映射之一資料 ❾ 無線承載時’分別將複數個狀態參數Next_PHCP TX SN、 TX HFN、Next—PDCP一RX—SN 以及 RX HFN 重置為起始值 的手段。 30·如申請專利範圍第29項所述之用戶設備，其中該資料無線承载 包含有該第一發信無線承載與一第二發信無線承载(SignaUng Radio Bearer 2 > SRB2) ° 八、囷式： 28201014433 VII. Patent application scope: 1. A communication method applied to an Evo丨vedu MTS Terrestrial Radio Access Network (Ε-UTRAN) for use with a User Equipment (UE) After re-establishing a Radio Resource Control (RRC) connection procedure, the operation of the Packet Data Convergence Protocol (PDCP) is synchronized, and the communication method includes: φ when a radio resource control connection When re-establishing, 'start a radio resource control reconfiguration procedure to reply to all radio bearers except for the Signaling Radi〇Bearer Bu SRB1; when replying to a radio link system (Radi0 Control , RLC) One of the data radio bearers mapped under the Acknowledge Mode (AM) (Data 'Retransmission-Group specified packet data aggregation protocol service data unit (Service Data Unit, smj) is given to the user. 2. For patent application scope The communication method described in the above item, wherein the packet data aggregation protocol service data unit specified by the group includes The corresponding packet data aggregation protocol data unit has not been confirmed by the lower communication layer as a plurality of packet data aggregation age service (4) unit t, which is sorted in the first--package aggregation protocol service data unit and all subsequent _ packets Data Aggregation Agreement Service 3. The financial method described in (4) the monograph item, in which the designated package material, the agreement service data unit contains the corresponding packet data aggregation agreement data unit has not been confirmed as successful by the lower layer communication At least one package data transmitted 21 201014433 聚合 Aggregation Agreement Service Data Unit 4. The communication method described in Item 1 of the scope of the patent application, further includes: receiving a package data aggregation agreement status report sent from the user equipment; The packet data aggregation agreement service data unit specified by the group includes a packet data aggregation agreement service data unit that is indicated as not yet received in the packet data aggregation agreement status report. 5. As stated in claim 1 The communication method further includes: ❹ when replying to the wireless link control approval mode Reset the header header compression protocol (Header Compression Protocol) when the data is mapped or transmitted back to the data radio bearer mapped in the non-recognized mode (Unackn〇wledgedMQde, UM). • I· * ti 6. The method described in the first reading of the scope of patent application, the method further includes: when the data is returned to the wireless chain 4 control device, the data is mapped or returned to a wireless button. When one of the data radio bearers mapped in the non-recognized mode is controlled, the plurality of status parameters Next_PHCP__RX SN, ® TX-HFN, Next_PDCP_RX_SN, and RX HFN are reset to the starting values. 7. The communication method of claim 6, wherein the data radio bearer packet includes the first transmit radio bearer and a second transmit radio bearer (SRB2). 8. The communication method described in claim 1 of the patent scope includes: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KeNB), and generates a ciphering key via the base key of the scale; and 22 201014433 applies the encryption key to encrypt the retransmitted packet data aggregation protocol data unit. 9. A communication method applied to a User Equipment (UE) for re-establishing with an evolved universal terrestrial wireless access network (pvolved UMTS Terrestrial, v.; Radio Access Network, another - UTR^Si) After establishing a Radio Resource Control (RRC) connection procedure, the operation of the Packet Data Convergence Protocol (PDCP) is synchronized, and the method includes: when a radio resource control connection is re-established When establishing, start a radio resource control reconfiguration procedure to reply to all radio bearers except a first signaling radio bearer (Signaling Radi〇Bearer Bu SRB1); when replying to a radio link control (Radio Link Control, RLC)Acceptance Mode {Acknowledge Mode, one of the data radio bearers (Data Radio Beai^ D#, 接政# The evolved universal terrestrial wireless access network specifies a packet data aggregation protocol service data unit (Service Data Unit, SDU) 10. If the communication method described in claim 9 is applied, the designated packet data aggregation agreement service data unit The packet data aggregation agreement service data unit has not been successfully received by the user equipment. 11. The communication method described in claim 9 includes: when replying to the non-road control program type _ Looking for the (four) radio bearer 'transport-package-contract status report to the evolved universal terrestrial wireless access network; 23 201014433 wherein the group specified packet data aggregation agreement service data unit contains the status report on the packet data aggregation agreement Indicated as the packet data aggregation agreement service data unit that has not been received. 12. The communication method described in claim 9 of the patent application, further includes: when replying to the radio link control accreditation office The header decompression protocol (Header De-Compression Protocol) when the data is wirelessly carried or replied to a data radio bearer mapped in a radio link control mode (Unackn 〇 wledged M 〇, UM) The reset method is as follows: 13. The communication method described in claim 9 of the patent scope further includes: when replying to the wireless link control approval mode When the mapped data carries the radio bearer, starting a timer to rearrange a plurality of received packet data aggregation protocol service data units to generate a plurality of received packet data aggregation protocol service data units; and When the timer is finished, the header data g-scraping program is sensitive to the data packet unit of the received packet data aggregation protocol. 14. The communication method according to claim 9 of the patent application, further comprising: when replying to the data radio bearer mapped in the radio link control approval mode or returning to a radio link control non-acceptance mode When one of the data radio bearers is mapped, a plurality of status parameters NextJ>HCP TX SN, TX-HFN'NexU>D〇>_Rx_SN, and rainbow-duplicate are respectively reset to the starting values. 15. The communication method of claim 14, wherein the data radio bearer includes the first-issue radio bearer and the second telecommunications radio bearer (5) calls Radio Bearer 2, SRB2). 24 201014433 16. - EvGlved R-essNetw ton E_UTRAN is used to re-establish a radio resource control (10) in the user equipment (Equipment, UE) also Res〇_c〇 l RRC) After the connection procedure, the packet data aggregation protocol ((10) Poor her (5) Hidden Protocol 'PDCP) operation js] step by step. The evolution of the land wireless access network includes: used in a wireless _ source When the control connection is re-established, a radio resource control is initiated to reset the new configuration procedure to reply to all wireless bearers (means) except for a first signaling radio bearer (SRB1); Retransmitting a specified set of pdcps when responding to a Data Radio Bearer (DRB) mapped in a Radio Mode Control (RLC) Acknowledge Mode (AM) The means of the Service Data Unit (SDU) to the user equipment. 17. In the Evolved Universal Terrestrial Radio Access Network as described in claim 16, wherein the PDCP service data element specified by the group includes a starting from a corresponding PDCP protocol data unit ^rotocolD^taUnit, PDU ) All pDCp service data units that have not been confirmed by the lower layer communication layer as the first PDCP service data unit successfully transmitted. 18. The Evolved Universal Terrestrial Radio Access Network of claim 16, wherein the designated PDCP service data element comprises a corresponding PDCP protocol data element that has not been confirmed as a successful transmission by the lower layer communication layer. PDcp service data unit. 19. The Evolved Universal Terrestrial Radio Access Network as described in claim 16 of the patent application, wherein the PDCP service data element specified in the group in 201014433 is included in the PDCP status report sent from the user equipment is not yet indicated. Received the pDcp service data unit. 20. The Evolved Universal Terrestrial Wireless Access Network as described in claim 16 further comprising: a radio bearer or a reply to the scale that is mapped in response to the non-road_recognition assignment The link control non-recognition mode (Unackn〇wledged 顾 Gu6, leg) is mapped to the _ _ wireless bearer, the means to reset the Header Compression Protocol. 21. The evolved universal terrestrial wireless access network of claim 16, further comprising: the wireless bearer for replying to the data mapped in the wireless lining control approval mode or replying to a wireless chain When the data control one of the data radio bearers mapped in the non-approval mode, the plurality of status parameters ^ Next„PHCP_TX_SN ^ TX_HFN ^ Next.PDCP_RX_SN A RX_HFN are respectively reset to the starting value. 22·If the patent application scope is 21 The universal terrestrial wireless access network, wherein the data radio bearer includes the first radio bearer and a second radio bearer (Signaling Radio Bearer 2, SRB2). The evolved universal terrestrial wireless access network described in the item further includes: an application, a ciphering key (4) for retransmission of the pDcp protocol data sheet 7C, wherein the encrypted gold record is controlled according to the wireless resource A new base key (base-key) generated by the re-establishment process of the 26 201014433 line is generated. 24. User Equipment (UE) is used to Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) re-establishes a radio resource control (Ra(ji) Resource Control (RRC) connection procedure and then packet data aggregation protocol (Packet Data Convergence Protocol Synchronization of the operation of the PDCP), the user equipment includes: for resuming all wireless except for a first outgoing wireless bearer (SRB1) when a RRC connection is re-established The means of bearer (means); and one of the data radio bearers that are mapped in response to a "no-control" (Link C〇ntr〇i, rlc) Acknowledge Mode (AM) (Data Radio Bearer) , DRB) 'receives a means of transmitting a PDCP Service Data Unit (SDU) from a group of the Evolved Universal Terrestrial Radio Access Network. 25. User Equipment as claimed in claim 24 , wherein the designated pDcp service dragon unit of the group contains the pDCp service data unit of the declining job of the green household. 26. The user equipment as described in the 24th reading of the patent application, Included: a means for transmitting a -PDCP status report to the evolved terrestrial wireless access network when the data radio bearer mapped by the wireless secret_acceptance mode τ is returned, wherein the group specifies the curry service The data unit contains the PDcp service data unit that is indicated as not yet received in the milk status report. 0 27 201014433 27 · The user equipment as described in claim 24 of the patent application, further comprising: In the wireless training control, the data radio bearer mapped in the portable mode or the data radio bearer mapped under the Unackn〇wledged Mode (UM), The means of resetting by the Header Compression Protocol. 28. The user equipment of claim 24, further comprising a timer, wherein when the data is backed up in the wireless link control approval mode, the timer is started Rearranging a plurality of received PDCP service data units to generate a plurality of received PDCP service data units; and when the timer is timed, a header decompression program will receive the received orders PDCP service data 皋 git line edge 9 29. The user equipment as described in claim 24, further comprising: a radio bearer for mapping the data mapped in the radio link control approval mode or Responding to one of the data mapped in the radio link control non-acceptance mode ❾ when the radio bearer 'resets the plurality of status parameters Next_PHCP TX SN, TX HFN, Next-PDCP-RX-SN and RX HFN to the starting value respectively s method. 30. The user equipment of claim 29, wherein the data radio bearer comprises the first transmit radio bearer and a second transmit radio bearer (SignaUng Radio Bearer 2 > SRB2) 八 囷Type: 28
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